Results 201 to 210 of about 25,708 (247)

Non-linear companding scheme for peak-to-average power ratio (PAPR) reduction in generalized frequency division multiplexing

Journal of Optical Communications, 2020
Abstract Due to the evolution of mobile phone technology which enables the use of Internet, the demand for data rates has increased tremendously. Therefore, current 4G-LTE (long-term evolution) technology needs to be replaced in near future. Hence, currently possible solutions for 5G technology are heavily investigated.
Shiv Om Tiwari, Rajeev Paulus
openaire   +1 more source

Peak-to-Average Power Ratio of OTFS Modulation

IEEE Communications Letters, 2019
In this letter, we analyze the peak-to-average power ratio (PAPR) of orthogonal time frequency space modulation (OTFS) waveform. Towards this, we consider modulation symbols on an $N\times M$ delay-Doppler grid, where $N$ and $M$ are the number of ...
G. Surabhi, Rose Mary Augustine, A. Chockalingam   +2 more
semanticscholar   +1 more source

C2. Progressive Image Transmission over OFDM System with Minimum Peak-to-Average Power Ratio (PAPR)

2013 30th National Radio Science Conference (NRSC), 2013
A modified Orthogonal Frequency Division MuItiplexing (OFDM) system for robust progressive image transmission is proposed in this paper. A joint sOUfce-channel coder (JSC C ) is employed in the modified OFDM system. The set partitioning hierarchical trees (SPTHT) used as SOUfce code, and The Low-Density Parity-C heck (LDPC ) used as a channel coder ...
Usama S. Mohammed, Osama A. Omer, Ahmed S. A. Mubarak   +2 more
openaire   +1 more source

Peak-to-Average Power Ratio reduction in OTFS modulation using companding technique

IEEE International Conference on Distributed Computing Systems, 2020
OTFS (Orthogonal Time Frequency & Space) is one of the recent 2D modulation scheme suitable for 5G.In which information symbols in the delay-Doppler grid of N×M are multiplexed over new class of carrier waveforms, which are localized pulses represented ...
C. Naveen, V. Sudha
semanticscholar   +1 more source

Highly Efficient Transmitter for High Peak to Average Power Ratio (PAPR) Waveforms

2011
Abstract : Aethercomm has shown that a high efficiency power amplifier can be developed to enhance efficiency over specific bands over frequencies ranging between 400MHz through 4000MHz with up to 67% efficiencies. These frequencies can be extended down to 30MHz and offer consistent performances by adding additional band functionality allowing support ...
Conni King, Alex Besprozvanny
openaire   +1 more source

Peak-to-Average Power Ratio (PAPR) Reduction Method using Hybrid Codeword Shifting (CSC+CVMT) in an F-OFDM System

Journal of Advanced Research in Applied Sciences and Engineering Technology, 2023
One of the potential technologies for a future wireless network is filtered-OFDM (F-OFDM). The capacity to handle numerous asynchronous sub-band transmissions is necessary in order to accommodate the diversity of services. However, multicarrier transmission systems with multiple subcarriers transmit signals with high Peak-to-Average Power Ratios (PAPR).
Jabar, Aidatul Julia Abd, Idris, Azlina, Dimyati, Kaharuddin, Kassim, Murizah, Bakar, Aslina Abu   +4 more
openaire   +2 more sources

Peak to average power ratio (PAPR) reduction in orthogonal frequency division multiplexing using pilot assisted technique

2016 International Conference on Wireless Communications, Signal Processing and Networking (WiSPNET), 2016
This paper investigates a novel technique called as pilot assisted techniques for PAPR reduction in orthogonal frequency division multiplexing (OFDM). A pilot assisted technique has been implemented in MATLAB for AWGN and Rayleigh channel. PAPR has been found out for AWGN and Rayleigh channel. Also the Bit error rate (BER) vs frame for each channel has
Bhalchandra Madhao Hardas, Sanjay B. Pokle   +1 more
openaire   +1 more source

Reducing peak to average power ratio (PAPR) for visible light communications (VLC) system using Walsh–Hadamard precoded discrete Hartley transforms

Journal of Optical Communications, 2022
Abstract In visible light communication (VLC), intensity modulation with direct detection (IM/DD) based on DC-biased optical orthogonal frequency division multiplexing (DCO-OFDM) is used to transfer data at a high rate. Because OFDM signals are modulated using IM/DD, the peak of the transmitted signals is scaled up, resulting in a high ...
Mohammed K. Mohaisen, Mounir T. Hamood, Mohammed Sh. Ahmed   +2 more
openaire   +1 more source

Peak to Average Power Ratio (PAPR) Mitigation for Underwater Acoustic OFDM System by Using an Efficient Hybridization Technique

2020 IEEE 6th International Conference on Computer and Communications (ICCC), 2020
Peak to average power ratio (PAPR) deemed as a stumbling block degrades the performance of orthogonal frequency division multiplexing (OFDM) in the underwater acoustic system by causing various issues like saturation, nonlinear distortion, and superposition of the signal spectrum within the high-power amplifier(HPA).
Farhad Banoori, Jinglun Shi, Khalid Khan, Ruiyan Han   +3 more
openaire   +1 more source

Peak-to-Average Power Ratio Reduction Using Selected Mapping for Mixed Numerology NOMA

IEEE Transactions on Wireless Communications
Non-orthogonal multiple access (NOMA) with mixed numerology is a promising technology that blends flexibility and high spectral efficiency. However, since NOMA enables multiplexing of the same time-frequency resources for different users and mixed ...
Nan Shi, Xiaoran Liu, Li Zhou, Haijun Zhang, Jun Xiong, Haitao Zhao, Jibo Wei   +6 more
semanticscholar   +1 more source